Maximus the Confessor (588-620) on Theosis

“...in Maximus's view, God will recognize and divinize His own, that is, those who willfully employ their true nature. An intense yearning for relationship with the Creator, as well as an ability to fulfill it, was bestowed on the human race by God Himself, who ever moves His creation toward its end in Himself: 'He sets in movement in us an insatiable desire for himself who is the Bread of Life, wisdom, knowledge, and justice.” Unceasingly, God transposes willing humanity 'from the lower to the greater,' 'from glory to glory,' to divinization.”—Theosis, page 135-136